| Southern Pacific GS-2 | |
|---|---|
| Power type | Steam |
| Builder | Lima Locomotive Works |
| Serial number | 7646–7651 |
| Build date | December 1936 |
| Total produced | 6 |
| Configuration | 4-8-4 |
| UIC classification | 2′D2′ h2 |
| Gauge | 4 ft 8 1⁄2 in (1,435 mm) |
| Driver diameter | 73½ inch |
| Axle load | 67,000 lb (30.4 tonnes) |
| Weight on drivers | 266,500 lb (120.9 tonnes) |
| Locomotive weight | 448,400 lb (203.4 tonnes) |
| Locomotive & tender combined weight |
821,400 lb (372.6 t) |
| Fuel type | Fuel oil |
| Fuel capacity | 6,275 US gal (23,750 l; 5,225 imp gal) |
| Water capacity | 22,000 US gal (83,000 l; 18,000 imp gal) |
| Boiler pressure | 250 psi (1.72 MPa) |
| Firegrate area | 90.2 sq ft (8.38 m2) |
| Heating surface: Total |
4,858 sq ft (451.3 m2) |
| Superheater area | 2,565 sq ft (238.3 m2) |
| Cylinders | Two, outside |
| Cylinder size | 27 × 30 in (686 × 762 mm) |
| Tractive effort | 62,200 lbf (276.68 kN), 74,710 lbf (332.33 kN) with booster |
| Career | Southern Pacific Company |
| Class | GS-2 |
| Number | 4410–4415 |
| First run | January 1937 |
| Retired | 1956 |
| Disposition | All scrapped |
The GS-2 was a streamlined 4-8-4 Northern type steam locomotive that served the Southern Pacific Company from 1937 to 1956. They were built by Lima Locomotive Works and were numbered 4410 through 4415. GS stands for "Golden State" or "General Service."
The GS-2 had a very different appearance than that of the GS-1. The GS-2s were streamlined and designed for high-speed passenger service. They featured a silver smokebox with a cone-shaped single headlight casing, skyline casing on the top of the boiler, skirting on the sides, and an air horn. They retained the teardrop classification lights and whistles.
They were the first to receive the red and orange "Daylight" paint scheme and were used for the streamlined debut of Southern Pacific's premier passenger train, the Coast Daylight in 1937. The following year they were replaced by the improved GS-3 engines. During World War II, they were painted black and silver and were used to transport troops. In the 1950s their side skirting was removed for easier maintenance, and the locomotives were assigned to general service, pulling such trains as San Jose-San Francisco commutes, the "Coast Mail" trains, and freight service.
No GS-2 locomotives survive.
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